How to add a space after the 4th and 10th character [duplicate]

Question

I have a string consisting of 15 digits. For example, 347405405655278. I need to add a blank space after the 4th digit and then after the 10th digit making it look like 3474 054056 55278. Can I achieve this using a regular expression?

Answer 1

With the help of regular expression, you can use the given below code to achieve the desired result:

var result = "347405405655278".replace(/^(.{4})(.{6})(.*)$/, "$1 $2 $3");